My interactions with Sorkin were agonisingly weird. He is by far the weirdest person I have ever met. I had dinner with him and a few hours before I got an e-mail from his assistant saying ‘Sean this does not need to be a long conversation. Aaron is only going to use it to win your trust.’

It would be incredibly presumptuous and self-serving of me to believe that Facebook was the end of history. The only way it could possibly be the end of history is if it becomes some sort of artificial super intelligence that takes over the world.